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From c9083a7a541a2d7231633df10dba151853fd4bca Mon Sep 17 00:00:00 2001
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Message-Id: <c9083a7a541a2d7231633df10dba151853fd4bca@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Wed, 31 Jan 2018 12:50:59 +0100
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Subject: [PATCH] util: json: Add helper to return string or number properties
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as string
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The helper is useful in cases when the JSON we have to parse may contain
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one of the two due to historical reasons and the number value itself
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would be stored as a string.
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(cherry picked from commit d3da8013cc11d6a10d4a4146bcbb0a7e34523fa5)
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https://bugzilla.redhat.com/show_bug.cgi?id=1540290
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---
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src/util/virjson.c | 27 +++++++++++++++++++++++++++
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src/util/virjson.h | 1 +
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2 files changed, 28 insertions(+)
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diff --git a/src/util/virjson.c b/src/util/virjson.c
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index 17b11f2b3d..14b68b8c93 100644
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--- a/src/util/virjson.c
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+++ b/src/util/virjson.c
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@@ -1208,6 +1208,33 @@ virJSONValueObjectGetString(virJSONValuePtr object,
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}
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+/**
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+ * virJSONValueObjectGetStringOrNumber:
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+ * @object: JSON value object
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+ * @key: name of the property in @object to get
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+ *
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+ * Gets a property named @key from the JSON object @object. The value may be
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+ * a number or a string and is returned as a string. In cases when the property
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+ * is not present or is not a string or number NULL is returned.
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+ */
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+const char *
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+virJSONValueObjectGetStringOrNumber(virJSONValuePtr object,
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+ const char *key)
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+{
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+ virJSONValuePtr val = virJSONValueObjectGet(object, key);
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+
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+ if (!val)
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+ return NULL;
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+
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+ if (val->type == VIR_JSON_TYPE_STRING)
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+ return val->data.string;
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+ else if (val->type == VIR_JSON_TYPE_NUMBER)
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+ return val->data.number;
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+
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+ return NULL;
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+}
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+
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+
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int
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virJSONValueObjectGetNumberInt(virJSONValuePtr object,
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const char *key,
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diff --git a/src/util/virjson.h b/src/util/virjson.h
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index e89a776ab5..b76a3c3472 100644
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--- a/src/util/virjson.h
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+++ b/src/util/virjson.h
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@@ -149,6 +149,7 @@ virJSONValuePtr virJSONValueObjectStealArray(virJSONValuePtr object,
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const char *key);
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const char *virJSONValueObjectGetString(virJSONValuePtr object, const char *key);
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+const char *virJSONValueObjectGetStringOrNumber(virJSONValuePtr object, const char *key);
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int virJSONValueObjectGetNumberInt(virJSONValuePtr object, const char *key, int *value);
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int virJSONValueObjectGetNumberUint(virJSONValuePtr object, const char *key, unsigned int *value);
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int virJSONValueObjectGetNumberLong(virJSONValuePtr object, const char *key, long long *value);
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--
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2.16.1
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